Research on Geological Provenances Variation and Selection of Parakmeria latungensis

LIU Jun; JIANG Jing-min; LIU Zhao-xi; LUAN Qi-fu; SUN Hong-gang; SHAO Wen-hao; ZHANG Jian-zhong

The growth traits of seed, seedling and young forest of 14 provenances of Parakmeria latungensis were investigated and analyzed. The results showed that the differences in seed weight, seedling height, basal diameter, leaf length and leaf width among provenances were extremely significant, and significant difference in afforestation preservation rate was also found among provenances. The provenances with higher preservation rate were from the northern source, such as Longquan provenance from Zhejiang Province. But provenances from the southern source such as Jianfengling provenance from Hainan Province showed the lower preservation rate. The differences in main growth traits were significant among provenances for young forests, such as 4-year-old tree height, five-year-old tree height and diameter at breast height, 6-year-old tree height and diameter at breast height. The broad heritability of these five traits was between 0.855 and 0.930, which indicated that phenotypic differences of the main growth traits were controlled mainly by genetic factors. Tree height and diameter at breast height were negatively correlated with the latitude, indicating that the decreasing trend of tree growth with increasing latitude of provenances. Tree height and diameter at breast height of young forest were positive related to the longitude, and positively related to the latitude. According to the trial results of the young provenance forest, three superior provenances, Longquan in Zhejiang Province, Shunchang in Fujian Province and Xinning in Hunan Province, were selected. The provenance source region of Parakmeria latungensis was divided into three subregions: the western source subregion, the eastern source subregion and the southern source subregion.

1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China

2. Changle Forest Experimental Station of Yuhang District of Hangzhou City, Hangzhou 311123, Zhejiang, China

Received Date: 2012-05-10

Available Online: 2012-10-11

Abstract: The growth traits of seed, seedling and young forest of 14 provenances of Parakmeria latungensis were investigated and analyzed. The results showed that the differences in seed weight, seedling height, basal diameter, leaf length and leaf width among provenances were extremely significant, and significant difference in afforestation preservation rate was also found among provenances. The provenances with higher preservation rate were from the northern source, such as Longquan provenance from Zhejiang Province. But provenances from the southern source such as Jianfengling provenance from Hainan Province showed the lower preservation rate. The differences in main growth traits were significant among provenances for young forests, such as 4-year-old tree height, five-year-old tree height and diameter at breast height, 6-year-old tree height and diameter at breast height. The broad heritability of these five traits was between 0.855 and 0.930, which indicated that phenotypic differences of the main growth traits were controlled mainly by genetic factors. Tree height and diameter at breast height were negatively correlated with the latitude, indicating that the decreasing trend of tree growth with increasing latitude of provenances. Tree height and diameter at breast height of young forest were positive related to the longitude, and positively related to the latitude. According to the trial results of the young provenance forest, three superior provenances, Longquan in Zhejiang Province, Shunchang in Fujian Province and Xinning in Hunan Province, were selected. The provenance source region of Parakmeria latungensis was divided into three subregions: the western source subregion, the eastern source subregion and the southern source subregion.

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Reference (20)

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Research on Geological Provenances Variation and Selection of Parakmeria latungensis

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References

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